Setting up EMITIMES for multiple time varying sources with different pollutants over long time periods
Posted: June 30th, 2021, 12:22 pm
I have 2 questions regarding EMITIMES file set up for multiple time varying emissions sources with multiple pollutants:
1. I am trying release emissions from multiple different fire sources over the course of a year. The start time, duration, emissions rate, and heat vary for each location (each fire releases for <1 day). Is it necessary to write a new header, and thus a new emissions cycle, for each source, redefining the start time and duration for each fire in the header? Or is it possible to use just one header for the year (one really long emissions cycle) and have the start time just be the date/time of the first fire of the year and the duration be the total number of hours spanning all fires (i.e. duration = numerous months)? Examples of these two options are below:
YYYY MM DD HH DURATION(hhhh) #RECORDS
YYYY MM DD HH MM DURATION(hhmm) LAT LON HGT(m) RATE(/h) AREA(m2) HEAT(w)
1981 05 09 00 2688 4
1981 05 09 00 00 0600 39.024 -120.365 0.0 2.120 40000 12409.83
1981 05 15 00 00 0600 38.772 -120.529 0.0 2.766 40000 14753.93
1981 06 07 00 00 1100 38.822 -119.997 0.0 2.532 40000 11580.51
1981 08 27 00 00 0600 39.058 -120.285 0.0 1.775 40000 13278.11
YYYY MM DD HH DURATION(hhhh) #RECORDS
YYYY MM DD HH MM DURATION(hhmm) LAT LON HGT(m) RATE(/h) AREA(m2) HEAT(w)
1981 05 09 00 0600 1
1981 05 09 00 00 0600 39.024 -120.365 0.0 2.120 40000 12409.83
1981 05 15 00 0600 1
1981 05 15 00 00 0600 38.772 -120.529 0.0 2.766 40000 14753.93
1981 05 07 00 1100 1
1981 06 07 00 00 1100 38.822 -119.997 0.0 2.532 40000 11580.51
1981 05 27 00 0600 1
1981 08 27 00 00 0600 39.058 -120.285 0.0 1.775 40000 13278.11
2. I am also looking to define two different pollutants in my simulation, but both pollutants are not release from each source. In other words, some sources release only pollutant A and some release only pollutant B. Is there a way to set this up in the EMITIMES/CONTROL files where different sources release different pollutants? Or will I have to set up two different runs, one for each pollutant?
Thank you in advance for your help!
1. I am trying release emissions from multiple different fire sources over the course of a year. The start time, duration, emissions rate, and heat vary for each location (each fire releases for <1 day). Is it necessary to write a new header, and thus a new emissions cycle, for each source, redefining the start time and duration for each fire in the header? Or is it possible to use just one header for the year (one really long emissions cycle) and have the start time just be the date/time of the first fire of the year and the duration be the total number of hours spanning all fires (i.e. duration = numerous months)? Examples of these two options are below:
YYYY MM DD HH DURATION(hhhh) #RECORDS
YYYY MM DD HH MM DURATION(hhmm) LAT LON HGT(m) RATE(/h) AREA(m2) HEAT(w)
1981 05 09 00 2688 4
1981 05 09 00 00 0600 39.024 -120.365 0.0 2.120 40000 12409.83
1981 05 15 00 00 0600 38.772 -120.529 0.0 2.766 40000 14753.93
1981 06 07 00 00 1100 38.822 -119.997 0.0 2.532 40000 11580.51
1981 08 27 00 00 0600 39.058 -120.285 0.0 1.775 40000 13278.11
YYYY MM DD HH DURATION(hhhh) #RECORDS
YYYY MM DD HH MM DURATION(hhmm) LAT LON HGT(m) RATE(/h) AREA(m2) HEAT(w)
1981 05 09 00 0600 1
1981 05 09 00 00 0600 39.024 -120.365 0.0 2.120 40000 12409.83
1981 05 15 00 0600 1
1981 05 15 00 00 0600 38.772 -120.529 0.0 2.766 40000 14753.93
1981 05 07 00 1100 1
1981 06 07 00 00 1100 38.822 -119.997 0.0 2.532 40000 11580.51
1981 05 27 00 0600 1
1981 08 27 00 00 0600 39.058 -120.285 0.0 1.775 40000 13278.11
2. I am also looking to define two different pollutants in my simulation, but both pollutants are not release from each source. In other words, some sources release only pollutant A and some release only pollutant B. Is there a way to set this up in the EMITIMES/CONTROL files where different sources release different pollutants? Or will I have to set up two different runs, one for each pollutant?
Thank you in advance for your help!